feat: add physically explicit narrowband MUSIC

apps/acoustic-camera/styles.css

@@ -185,6 +185,7 @@
 }
 .compact-section-heading h3, .array-heading h3 { margin: 0; font-size: .75rem; }
 .compact-section-heading > span { color: var(--muted); font-size: .61rem; }
+.example-actions { display: flex; align-items: center; gap: 8px; }
 .compact-label, .mode-kicker { color: var(--mint); font: 750 .56rem ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .1em; }
 .builder-link { color: var(--cyan); font-size: .6rem; text-decoration: none; }
 .source-summary, .asset-list { display: grid; gap: 6px; margin-top: 8px; }
@@ -230,6 +231,24 @@
 .array-card > .field { margin-top: 9px; }
 .quick-field-grid, .advanced-field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
 .quick-field-grid { margin-top: 12px; }
+.algorithm-options {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 8px;
+  margin-top: 8px;
+  padding: 10px;
+  border: 1px solid var(--line);
+  border-radius: 10px;
+  background: rgba(101, 242, 191, .04);
+}
+.algorithm-options[hidden] { display: none; }
+.algorithm-options p {
+  grid-column: 1 / -1;
+  margin: 0;
+  color: var(--muted);
+  font-size: .78rem;
+  line-height: 1.45;
+}
 .field--wide { grid-column: 1 / -1; }
 .workload-summary {
   margin: 9px 0 0;
@@ -451,7 +470,7 @@ html[data-run-state="running"] #snapshot-mode { border-color: var(--mint); box-s
   .header-status { grid-column: 1 / -1; }
   .run-status { max-width: 100%; }
   .workflow-strip { top: 88px; }
-  .input-file-grid, .quick-field-grid, .advanced-field-grid, .output-actions, .band-editor, .live-controls { grid-template-columns: 1fr; }
+  .input-file-grid, .quick-field-grid, .algorithm-options, .advanced-field-grid, .output-actions, .band-editor, .live-controls { grid-template-columns: 1fr; }
   .field--wide, .live-scrubber { grid-column: auto; }
   .band-editor__remove { min-height: 32px; }
   .live-actions .button { flex: 1 1 calc(50% - 4px); }